/**
 *  Copyright 2009 Henning Teek, Ingo Renner
 *  
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *  
 *  http://www.apache.org/licenses/LICENSE-2.0
 *  
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License. 
 */
package com.googlecode.chigs.web.common.table;

import java.util.Iterator;

import org.apache.wicket.extensions.markup.html.repeater.util.SortableDataProvider;
import org.apache.wicket.injection.web.InjectorHolder;
import org.apache.wicket.model.IModel;
import org.synyx.hades.domain.AbstractPersistable;

import com.googlecode.chigs.web.common.DomainObjectModel;

/**
 * Generische Dataprovider, der die üblichen Zugriffe auf Domainobjekte eines Typs regelt.
 * Hauptsachlich für Auflistung in Tabellen und Aufzählungen.
 * Zuerst erstellt für die Ajaxfallbacktable
 * 
 * @author Ingo Renner
 * @author Henning Teek
 *
 * @param <T>
 */
public abstract class DataProvider<T extends AbstractPersistable<Long>> extends SortableDataProvider<T> {
	private final Class<T> type;

	@SuppressWarnings("unchecked")
	public DataProvider(T domainObject) {
		InjectorHolder.getInjector().inject(this);
		this.type = (Class<T>) domainObject.getClass();
	}

	@Override
	public void detach() {
	}

	@Override
	public abstract Iterator<? extends T> iterator(int from, int count);

	@Override
	public IModel<T> model(T object) {
		return new DomainObjectModel<T>((T)object);
	}

	@Override
	public abstract int size();

	public Class<T> getType() {
		return type;
	}
}
